rollup.config.js

import babel from 'rollup-plugin-babel'
import babelrc from 'babelrc-rollup'
import postcss from 'rollup-plugin-postcss'

export default {
  entry: 'src/index.js',
  dest: 'dist/grid.js',
  format: 'umd',
  moduleName: 'grid',
  external: [
    '@zambezi/d3-utils',
    '@zambezi/fun',
    'd3-array',
    'd3-dispatch',
    'd3-ease',
    'd3-format',
    'd3-selection',
    'd3-timer',
    'd3-transition',
    'underscore'
  ],
  sourceMap: true,
  plugins: [
    postcss(
      {
        plugins: [ ],
        extensions: ['.css', '.sss']
      }
    ),
    babel(babelrc())
  ],
  globals: {
    '@zambezi/d3-utils': 'd3Utils',
    '@zambezi/fun': 'fun',
    'd3-array': 'd3',
    'd3-dispatch': 'd3',
    'd3-ease': 'd3',
    'd3-format': 'd3',
    'd3-selection': 'd3',
    'd3-timer': 'd3',
    'd3-transition': 'd3',
    'underscore': '_'
  }
}